Cottone, R. Rocco
Allyn & Bacon, 1992
Buku Teks SO
Ken-ichi Ohbuchi, editor; Leonie R. Stickland, translator
Trans Pacific Press, 2007
Buku Teks SO
Hunt, Diana
Harvester Wheatsheaf, 1989
Buku Teks SO
Parker, Marilyn E.
F.A. Davis , 2001
Buku Teks SO
McKenna, Hugh
Routledge , 1997
Buku Teks SO